A Codoping Strategy for Efficient Planar Heterojunction Sb_2S_3 Solar Cells

Shiwu Chen; Mingyu Li; Yongcheng ZhuXueqin CaiFeng XiaoTianjun MaJi YangGuohuan ShenAn KeYue LuWenxi LiangHsien-Yi HsuChao ChenJiang TangHaisheng Song

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A Codoping Strategy for Efficient Planar Heterojunction Sb_2S_3 Solar Cells

机译：A Codoping Strategy for Efficient Planar Heterojunction Sb_2S_3 Solar Cells

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Antimony sulfide is a promising wide bandgap light-harvesting materialowing to its high absorption coefficient, nontoxicity, superior stability, andlow cost. However, the reported Sb_2S_3 absorber suffers from complicateddefect characteristics due to its quasi-1D structure. Herein, a codopingtechnique from chlorine and selenium is developed in hydrothermalmethod to regulate the film defect properties and promote the device efficiency.The theoretical calculation and experimental results demonstratethat the Cl&Se codoping plays a synergistic role in absorber film qualityimprovement. Se doping could efficiently fill the intrinsic deep defect levelVS and Cl is a benign n-type dopant and favor [hk1] oriented deposition.Systematic device physical characterizations verify the codoped devicesuperior heterojunction quality and much lower interface and bulk defectdensity comparing with control one. The optimal codoping device deliversa certified power conversion efficiency of 7.15% (5.9% for control one),the highest certified value in planar Sb_2S_3 solar cells. This study developsan effective doping strategy with multi-element synergistic incorporationwhich sheds new light on high-efficiency Sb_2S_3 solar cells.

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来源
《Advanced energy materials》 |2022年第47期|2202897.1-2202897.10|共10页
作者
Shiwu Chen; Mingyu Li; Yongcheng ZhuXueqin CaiFeng XiaoTianjun MaJi YangGuohuan ShenAn KeYue LuWenxi LiangHsien-Yi HsuChao ChenJiang TangHaisheng Song;
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Wuhan National Laboratory for Optoelectronics (WNLO)Huazhong University of Science and Technology (HUST)Wuhan, Hubei 430074, P. R. China;

School of Optical and Electronic Information (OEI)Huazhong University of Science and Technology (HUST)Wuhan, Hubei 430074, P. R. China;

Beijing Key Laboratory of Microstructure and Properties of SolidsFaculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124, P. R. ChinaSchool of Energy and Environment & Department of Materials Scienceand EngineeringCity University of Hong KongKowloon Tong, Hong Kong 999077, P. R. ChinaWuhan National Laboratory for Optoelectronics (WNLO)Huazhong University of Science and Technology (HUST)Wuhan, Hubei 430074, P. R. China,School of Optical and Electronic Information (OEI)Huazhong University of Science and Technology (HUST)Wuhan, Hubei 430;

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正文语种英语
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codoping; defect passivation; hydrothermal method; planarheterojunction solar cells; Sb_2S_3 thin films;

A Codoping Strategy for Efficient Planar Heterojunction Sb_2S_3 Solar Cells

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